CLIVET WSAN-YMi 101, Инструкция по установке, использованию и обслуживанию

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PER_START
Sets the number of units that will start once the system has
been started
Can be set from 10% to 100%. The percentage refers to the
total number of units ( Slave units)
TIME_ADJUST
Sets the time after which the Master unit checks whether to
activate or deactivate a Slave unit
Can be set from 0 to 60 min.
ADDRESS RESET
Sets the address code of a Slave unit.
The Slave units are automatically addressed and they do not
need to be addressed manually.
To set the address manually:

power off the Slave unit and connect the HMI to the unit

enter the address and press “UNLOCK” to confirm

power off the Slave unit and remove the HMI from the unit
there can be up to 2 units in defrosting mode at the same
time.
When these units have completed the defrosting stage, the
next 2 start defrosting
Settings.
MENU > FOR SERVICEMAN > CASCADE SET
Cooling, Heating and DHW logic
The unit’s control system can monitor and display the operations
of the whole system only by connecting the Master unit to the
HMI user interface.
The Master unit can operate in Cooling / Heating / DHW / AUTO
mode.
The Slave units can only work in Cooling / Heating mode.
In AUTO mode, the Master unit decides how to operate based
on its T4 probe (room temperature) and transmits the signal to
the Slave units.
The initial number of units is calculated according to two factors:
the % of units that need to turn on (set on the HMI) multiplied by
a coefficient based on the water delta T (set - output).
After a recurring period of time (set on the HMI), the Master unit
activates or deactivates the Slave units according to a
calculation carried out with the maximum temperature of the
domestic hot water tank and the water temperature required in
Heating / Cooling mode.
Every 10 seconds the Master unit sends a start signal to each
Slave unit to be operated
Only the Master unit can connect to the domestic hot water
boiler via a 3-way valve and control domestic hot water.
The 3-way valve and the DHW tank must be installed in the
Master unit piping: do not install the 3-way valve and the DHW
tank in the main pipe of the cascade system.
In case of a DHW request, the Master unit will operate in DHW
mode, while at the same time the Slave units can operate in
Heating or Cooling mode.
Once the DHW operation ends, the Master unit will go back to
the Heating / Cooling mode.
Only the Master unit can connect to the AHS and control it (an
auxiliary heating source such as a gas boiler).
Rotation and back-up.
The system counts the hours of operation of the compressor for
all the units (including the main one).
When the system is started, the units with the shortest operating
time have priority to start.
This way the system rotates the operation of all the units in
order to ensure they are used evenly.
In the event of a unit malfunction, the Master unit is set up to
activate the next one and ensure continuity of operation.
Note: the Master unit is included in the rotation logic, but cannot
have a backup.
Defrosting
The defrosting logic is as follows:
1. all the units ( Slave) simultaneously in defrosting
mode cannot be more than 50% of the units in operation
2. when a unit is defrosting (including the Master unit), no
other units will start
3. if the Master unit is producing domestic hot water, it defrosts
regularly as if it were not running in cascade: the Slave units
continue the Heating operations with the logic reported in
point 1
Examples
6-unit system, with 2 units running:
there can be up to 1 unit in defrosting mode at the same
time.
When this unit has completed the defrosting stage, the next
one starts defrosting
6-unit system, with 5 units running: